Name

logger

Synopsis

    logger [options] [messages]

Log messages to the system log. Command-line messages are logged if provided. Otherwise, messages are read and logged, line-by-line, from the file provided via -f. If no such file is given, logger reads messages from standard input.

Common Options

-f file

Read and log messages from file.

-i

Log the process ID of the logger process with each message.

-p priority

Log each message with the given priority. Priorities have the form facility . level. The default is user.notice. See syslog (3) for more information.

-t tag

Add tag to each message line.

Mac OS X and GNU/Linux Option

-s

Send the message to standard error, in addition to sending it to the system log.

GNU/Linux Options

-d

When using a specified socket with -u, use a datagram socket instead of stream socket.

-u socket

Write to socket instead of to the system log.

Example

Warn about upcoming trouble:

    logger -p user.emerg 'Incoming Klingon battleship!'

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